25220994 has 16 divisors (see below), whose sum is σ = 50806560. Its totient is φ = 8346240.

The previous prime is 25220963. The next prime is 25221023. The reversal of 25220994 is 49902252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14287 + ... + 15954.

It is an arithmetic number, because the mean of its divisors is an integer number (3175410).

Almost surely, 2^25220994 is an apocalyptic number.

25220994 is an abundant number, since it is smaller than the sum of its proper divisors (25585566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25220994 is a wasteful number, since it uses less digits than its factorization.

25220994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30385.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 25220994 is about 5022.0507763263. The cubic root of 25220994 is about 293.2608346428.

The spelling of 25220994 in words is "twenty-five million, two hundred twenty thousand, nine hundred ninety-four".